Almost any medication may cause hives or angioedema. Common culprits include penicillin, aspirin, ibuprofen (Advil, Motrin IB, others), naproxen (Aleve) and blood pressure medications. Common allergens. Other substances that can cause hives and angioedema include pollen, animal dander, latex and insect stings. Environmental factors. Examples include heat, cold, sunlight, water, pressure on the skin, emotional stress and exercise.
The color of Neptune is a bright azure blue. During its flyby in 1989, NASAâs Voyager 2 revealed the bright blue color, different from the pale blue color of Uranus. So why does Neptune have this color? The answer to Neptuneâs color comes from its cloud tops. The upper atmosphere of Neptune is made up [â¦]
The main reason behind Neptuneâs blue color is methane. When sunlight hits the planetâs surface, the methane clouds absorbs the red end of the spectrum of visible light. The blue end of the spectrum gets reflected back.o, when we see the bright bluish color of Neptune, we actually see the reflected sunlight, minus the red light. Neptune looks like a beautiful blue sphere from a distance, but the color variations in its clouds can be clearly noticed, if viewed closely. The surface of Neptune is also well-known for powerful storms.